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Applications of High-Contrast Imaging Techniques and Polarimetry to (Exo-)Planetary Science
Applications of High-Contrast Imaging Techniques and Polarimetry to (Exo-)Planetary Scienc...
Applications of High-Contrast Imaging Techniques and Polarimetry to (Exo-)Planetary Science

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211152834
ISBN  
9798384086055
DDC  
520
저자명  
Lewis, Briley Lynn.
서명/저자  
Applications of High-Contrast Imaging Techniques and Polarimetry to (Exo-)Planetary Science
발행사항  
[Sl] : University of California, Los Angeles, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
238 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
주기사항  
Advisor: Fitzgerald, Michael P.
학위논문주기  
Thesis (Ph.D.)--University of California, Los Angeles, 2024.
초록/해제  
요약The goal of this thesis is to characterize circumstellar disks and substellar objects, from moons to brown dwarfs, by improving and applying techniques from high-contrast imaging. To do so, I led four projects, two of which expand the range of targets accessible by high-contrast imaging. In Project 1, I develop an improved algorithm for high-contrast imaging data processing, enabling detection of fainter, smaller planets; this algorithm uses both spatial and temporal information on the speckle noise present in high-contrast images, and will be especially useful for next-generation photon-counting detectors such as Microwave Kinetic Inductance Detectors (MKIDs). In Project 2, I demonstrate a new technique to detect and monitor ejections of ice particles from subsurface oceans on outer solar system bodies, such as Jupiter's icy moon Europa, using ground-based polarimetric imaging. Such plumes have not been confirmed on Europa, but are of significant interest for astrobiology and planning for the upcoming Europa Clipper mission.The remaining two projects use existing analysis techniques to investigate individual systems of interest that add to our understanding of planet formation. In Project 3, I characterize the atmosphere of a brown dwarf around HIP 93398, a recently discovered companion identified via the Hipparcos Gaia Catalog of Accelerations, using high-resolution spectra from SCExAO/CHARIS. With both a dynamical mass measurement and high-resolution spectroscopy, HIP 93398 B provides substantial constraints on models of brown dwarf evolution. In Project 4, I constrain the morphology and scattering properties of the debris disk around the bright star HD 155623, a unique "hybrid" debris disk that shows signs of youth despite its age, using polarimetric data from the Gemini Planet Imager. With the information from my investigation, the HD 156623 system can now serve as a benchmark for models aiming to explain how gas and dust interact during the later stages of planet formation. These investigations both further innovation in exoplanet imaging techniques and, respectively, provide insight into detections of extrasolar planets, the nature of oceans beyond Earth, the mechanisms of planet formation, and the atmospheres of giant planets and brown dwarfs.
일반주제명  
Astronomy
일반주제명  
Astrophysics
일반주제명  
Planetology
일반주제명  
Atmospheric chemistry
키워드  
Astronomical instrumentation
키워드  
Debris disks
키워드  
Europa
키워드  
Exoplanets
키워드  
Infrared astronomy
키워드  
Polarimetry
기타저자  
University of California, Los Angeles Astronomy and Astrophysics 00EB
기본자료저록  
Dissertations Abstracts International. 86-03B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■1001  ▼aLewis,  Briley  Lynn.
■24510▼aApplications  of  High-Contrast  Imaging  Techniques  and  Polarimetry  to  (Exo-)Planetary  Science
■260    ▼a[Sl]▼bUniversity  of  California,  Los  Angeles▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a238  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-03,  Section:  B.
■500    ▼aAdvisor:  Fitzgerald,  Michael  P.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Los  Angeles,  2024.
■520    ▼aThe  goal  of  this  thesis  is  to  characterize  circumstellar  disks  and  substellar  objects,  from  moons  to  brown  dwarfs,  by  improving  and  applying  techniques  from  high-contrast  imaging.  To  do  so,  I  led  four  projects,  two  of  which  expand  the  range  of  targets  accessible  by  high-contrast  imaging.  In  Project  1,  I  develop  an  improved  algorithm  for  high-contrast  imaging  data  processing,  enabling  detection  of  fainter,  smaller  planets;  this  algorithm  uses  both  spatial  and  temporal  information  on  the  speckle  noise  present  in  high-contrast  images,  and  will  be  especially  useful  for  next-generation  photon-counting  detectors  such  as  Microwave  Kinetic  Inductance  Detectors  (MKIDs).  In  Project  2,  I  demonstrate  a  new  technique  to  detect  and  monitor  ejections  of  ice  particles  from  subsurface  oceans  on  outer  solar  system  bodies,  such  as  Jupiter's  icy  moon  Europa,  using  ground-based  polarimetric  imaging.  Such  plumes  have  not  been  confirmed  on  Europa,  but  are  of  significant  interest  for  astrobiology  and  planning  for  the  upcoming  Europa  Clipper  mission.The  remaining  two  projects  use  existing  analysis  techniques  to  investigate  individual  systems  of  interest  that  add  to  our  understanding  of  planet  formation.  In  Project  3,  I  characterize  the  atmosphere  of  a  brown  dwarf  around  HIP  93398,  a  recently  discovered  companion  identified  via  the  Hipparcos  Gaia  Catalog  of  Accelerations,  using  high-resolution  spectra  from  SCExAO/CHARIS.  With  both  a  dynamical  mass  measurement  and  high-resolution  spectroscopy,  HIP  93398  B  provides  substantial  constraints  on  models  of  brown  dwarf  evolution.  In  Project  4,  I  constrain  the  morphology  and  scattering  properties  of  the  debris  disk  around  the  bright  star  HD  155623,  a  unique  "hybrid"  debris  disk  that  shows  signs  of  youth  despite  its  age,  using  polarimetric  data  from  the  Gemini  Planet  Imager.  With  the  information  from  my  investigation,  the  HD  156623  system  can  now  serve  as  a  benchmark  for  models  aiming  to  explain  how  gas  and  dust  interact  during  the  later  stages  of  planet  formation.  These  investigations  both  further  innovation  in  exoplanet  imaging  techniques  and,  respectively,  provide  insight  into  detections  of  extrasolar  planets,  the  nature  of  oceans  beyond  Earth,  the  mechanisms  of  planet  formation,  and  the  atmospheres  of  giant  planets  and  brown  dwarfs.
■590    ▼aSchool  code:  0031.
■650  4▼aAstronomy
■650  4▼aAstrophysics
■650  4▼aPlanetology
■650  4▼aAtmospheric  chemistry
■653    ▼aAstronomical  instrumentation
■653    ▼aDebris  disks
■653    ▼aEuropa
■653    ▼aExoplanets
■653    ▼aInfrared  astronomy
■653    ▼aPolarimetry
■690    ▼a0606
■690    ▼a0596
■690    ▼a0590
■690    ▼a0371
■71020▼aUniversity  of  California,  Los  Angeles▼bAstronomy  and  Astrophysics  00EB.
■7730  ▼tDissertations  Abstracts  International▼g86-03B.
■790    ▼a0031
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164122▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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